OpenCV Version Issue

Question

How to check the current version of OpenCV for mac and how to update my version to the newest version? I am trying to use the drawMatchesKNN and drawMatches function. The er

Answer 1

It depends how you installed it. If you use homebrew and you did:

brew install opencv

then, you can get your version with:

brew info opencv

and you can get the latest version with:

brew upgrade opencv

---

If you did:

brew install opencv3

then you need to do:

brew info opencv3

and you can upgrade with:

brew upgrade opencv3

---

If you cloned the git repo on github, you need to go to your build directory and run:

more *tmp

and you can upgrade with:

cd /where/ever/you/cloned/opencv
git pull
cd /where/ever/you/built/opencv
cmake /where/ever/you/cloned/opencv
make -j 8
sudo make install

Failing all that, build a simple executable that calls getBuildInformation()